Physics Forces and Energy

Use this answer key after players complete the quiz or when reviewing a printed worksheet.

1. What is a force?

Correct answer: A. A push or pull

Explanation: A force is a push or pull that can change motion.
2. Which force pulls objects toward Earth?

Correct answer: A. Gravity

Explanation: Gravity pulls objects with mass toward each other, including toward Earth.
3. What does friction usually do to motion?

Correct answer: A. Opposes motion

Explanation: Friction is a force that usually opposes motion between surfaces.
4. Which object has kinetic energy?

Correct answer: A. A rolling ball

Explanation: Kinetic energy is energy of motion, so a rolling ball has kinetic energy.
5. Which is stored energy?

Correct answer: A. Potential energy

Explanation: Potential energy is stored energy due to position or condition.
6. What carries electrical current in a simple circuit?

Correct answer: A. A closed conducting path

Explanation: Current flows when there is a closed conducting path.
7. What happens when light reflects?

Correct answer: A. It bounces off a surface

Explanation: Reflection happens when light bounces off a surface.
8. What causes sound?

Correct answer: A. Vibrations

Explanation: Sound is produced by vibrations traveling through a medium such as air.
9. Which simple machine is a ramp?

Correct answer: A. Inclined plane

Explanation: A ramp is an inclined plane, which helps move objects up or down a height.
10. What is speed a measure of?

Correct answer: A. Distance traveled per time

Explanation: Speed describes how much distance is traveled in a certain amount of time.

1. What is a force?

2. Which force pulls objects toward Earth?

3. What does friction usually do to motion?

4. Which object has kinetic energy?

5. Which is stored energy?

6. What carries electrical current in a simple circuit?

7. What happens when light reflects?

8. What causes sound?

9. Which simple machine is a ramp?

10. What is speed a measure of?